Giant Soviet Laser(?) Ruby Crystal, Wand or Sword Blade exotic with representative photos of crystals

with representative photos of crystals on a 1 mm grid

5 and brittleness which make it a definite collector's stone for display instead of for jewelry

A battery along with a charger that works both on a normal wall outlet and a car cigarette lighter

The color varies from light greyish-blue to more saturated blue-green

These are partial and complete laser rods in a variety of different types of YAG (yttrium aluminum garnet)

Giant Soviet Laser(?) Ruby Crystal, Wand or Sword Blade exotic with representative photos of crystalsThis is a bizarre crystal of ruby from an old collection of Soviet material. I am not even sure of the growth method it is very long and slender, and flattened, which makes me think it may have been grown by floating zone, though some sort of ultra refined flame fusion could be possible too. The unusual growth and lower concentration pure chromium doping makes me think it is likely laser ruby, meant to be grown for one long rod. The base has some